Positive ground bounce compensation circuit for bipolar integrat

Details Positive ground bounce compensation circuit for bipolar integrat Positive ground bounce compensation circuit for bipolar integrat

1997-10-16

2000-10-03

Callahan, Timothy P.

Miscellaneous active electrical nonlinear devices, circuits, and

Signal converting, shaping, or generating

Amplitude control

327384, 327551, 361111, 326 27, H03L 500

Patent

active

061278769

ABSTRACT:
A circuit (12) for reducing positive ground bounce effects on an integrated circuit (10) of the type having an integrated circuit transistor (40) that has reduced conduction when exposed to a positive ground bounce potential includes circuitry responsive to an increase in ground potential to produce a drive current and circuitry for applying the drive current to the integrated circuit transistor (40) to oppose the reduced conduction. The positive ground bounce circuit (12) has a ground bounce sense transistor (56) of same conductivity type as the integrated circuit transistor (40), and a circuit (69) to bias the ground bounce sense transistor (56) normally into conduction to pass a control current. Since ground bounce sense transistor (56) also has reduced conduction when exposed to a positive ground bounce potential, a diode (72) is provided to redirect the control current to the integrated circuit transistor (40), thereby reducing the effects of a positive ground bounce condition.

REFERENCES:
patent: 4791521 (1988-12-01), Ouyang et al.
patent: 4931673 (1990-06-01), Naghshineh
patent: 5043632 (1991-08-01), Asars et al.
patent: 5089721 (1992-02-01), Luich
patent: 5173621 (1992-12-01), Fraser et al.
patent: 5489861 (1996-02-01), Seymour

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